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A stationary think uniform density ring of mass 0.75kg and radius 40 cm drops onto a...

A stationary think uniform density ring of mass 0.75kg and radius 40 cm drops onto a uniform density disk that has the same mass and radius but the disk is initially rotating with an angular speed of w = 2.5 rad/s. After the ring falls onto the disk and they stick to each other, they rotate together with a new angular speed. There is negligible friction at the disks rotational axis. What is the combined moment of inter of the ring and disk?

  1. 0.12 Kg * m^2
  2. 0.24 Kg * m^2
  3. 0.30 Kg * m^2
  4. 0.060 Kg * m^2
  5. 0.18 Kg * m^2
0 0
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